Data model is one of the central activities in the research of spatiotemporal database.
时空数据模型是时空数据库的研究重点之一。
In spatiotemporal database, geographic entity model includes spatial and temporal information of geographic object.
在时空数据库中，地理实体模型包括地理对象空间信息和时态信息。
In order to adapt to the design requirement of spatiotemporal database, this article proposes a new spatiotemporal er enhanced model and introduces its relevant concept as well as design method.
为了满足时空数据库设计的需要，提出了新的时空er模型并给出了相关的概念及设计方法。
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